Results 91 to 100 of about 137,837 (282)

Development and testing of dry chemicals in advanced extinguishing systems for jet engine nacelle fires [PDF]

open access: yes
The effectiveness of dry chemical in extinguishing and delaying reignition of fires resulting from hydrocarbon fuel leaking onto heated surfaces such as can occur in jet engine nacelles is studied. The commercial fire extinguishant dry chemical tried are
Altman, R. L.   +3 more
core   +1 more source

Use of a distant reporter group as evidence for a conformational change in a sensory receptor [PDF]

open access: yes, 1977
A highly sensitive method for demonstrating ligand-induced conformational changes in protein molecules in solution is described. The method utilizes an environmentally sensitive reporter group that is known to be distant from the active site.
Hartig, P. R.   +2 more
core  

Ion-selective carbon-paste electrodes for halides and silver(I) ions [PDF]

open access: yes, 1973
The behaviour of a simple type of ion-selective electrode for halogens and silver has been studied. The electrode consists of a plastic body filled with carbon paste, the surface of which can be easily renewed.
Dahmen, E.A.M.F., Mesaric, S.
core   +3 more sources

Self‐Sustaining Piezozyme Platform for Antifouling via Mechanically Triggered Enzymatic Cascade

open access: yesAdvanced Science, EarlyView.
Wave‐powered CeO2/g‐C3N4 piezozyme coating converts ocean motion into an enzymatic H2O2‐to‐ROS cascade, realizing 180‐day eco‐friendly marine antifouling. ABSTRACT Harnessing ubiquitous mechanical energy for catalytic activation offers an emerging pathway toward self‐sustaining environmental protection systems.
Jingyu Wang   +3 more
wiley   +1 more source

Biomimetic Ru‐Mn Nanozyme with Cascade Catalytic Activity Attenuates Secondary Brain Injury in Intracerebral Hemorrhage

open access: yesAdvanced Science, EarlyView.
Ru–Mn composite nanozymes are engineered to mimic dual‐enzyme cascade catalysis, enabling efficient ROS clearance and neuroinflammation suppression. In collagenase‐ and autologous blood‐induced ICH mouse models, intranasal and intravenous administration reduced hematoma volume, preserved BBB integrity, and improved neurological recovery.
Zhongxin Duan   +8 more
wiley   +1 more source

Iodine value in pregravidal period of a woman’s life [PDF]

open access: yesГинекология, 2014
Iodine is an essential trace element, which is essential for the formation and development of a complete organism. Attempts to eliminate iodine deficiency are reduced to mass prevention by iodination of certain foods, but it is not possible to prevent ...
R M Yesayan, A V Sekinaeva
doaj  

First-in-man evaluation of 124I-PGN650: A PET tracer for detecting phosphatidylserine as a biomarker of the solid tumor microenvironment [PDF]

open access: yes, 2017
Purpose: PGN650 is a F(ab′) 2 antibody fragment that targets phosphatidylserine (PS), a marker normally absent that becomes exposed on tumor cells and tumor vasculature in response to oxidative stress and increases in response to therapy.
Dehdashti, Farrokh   +9 more
core   +2 more sources

Microglial Membranes Wrapped Ultrasmall Medium‐Entropy Ru Single‐Atom Nanozyme: Enhanced Catalysis for Accelerating Inflammation/Redox Microenvironment Regulation in Intracerebral Hemorrhage

open access: yesAdvanced Science, EarlyView.
PtRhIr/Ru SAN@M nanozymes cross the blood–brain barrier and selectively accumulate in hemorrhagic brain regions. By mimicking multiple enzyme activities, they attenuate oxidative stress, modulate microglial polarization toward an anti‐inflammatory phenotype, inhibit ferroptosis, and promote neuronal repair.
Jiebo Li   +17 more
wiley   +1 more source

Synthesis of Conjugated Linear and Cyclic Polyynes by Selective Alkyne Metathesis

open access: yesAngewandte Chemie, EarlyView.
The formation of polyynes with an odd number of conjugated triple bonds is challenging, particularly for complex architectures since most established methods rely on irreversible C–C bond‐forming reactions. To address this, we have developed the synthesis of triynes via alkyne metathesis.
Julien Escudero   +12 more
wiley   +2 more sources

Catalyst Initiation in the Oscillatory Carbonylation Reaction

open access: yesInternational Journal of Chemical Engineering, 2011
Palladium(II) iodide is used as a catalyst in the phenylacetylene oxidative carbonylation reaction that has demonstrated oscillatory behaviour in both pH and heat of reaction.
Katarina Novakovic, Julie Parker
doaj   +1 more source

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